CN205473482U - Two benzoyl chloride chlorine rectification steam isolating device of 3, 5 - - Google Patents
Two benzoyl chloride chlorine rectification steam isolating device of 3, 5 - Download PDFInfo
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- CN205473482U CN205473482U CN201620272505.8U CN201620272505U CN205473482U CN 205473482 U CN205473482 U CN 205473482U CN 201620272505 U CN201620272505 U CN 201620272505U CN 205473482 U CN205473482 U CN 205473482U
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- absorption cell
- pipeline
- absorption tank
- vacuum pump
- air
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Abstract
The utility model relates to a 3, 5 two benzoyl chloride chlorine rectification steam isolating device, including consecutive vacuum pump, vacuum buffer tank, absorption tank B, absorption tank A and rectifier unit, the top of vacuum buffer tank is equipped with three pipeline, connects vacuum pump, atmosphere and absorption tank B's top respectively, absorption tank B in still be equipped with the pipeline of connecting absorption tank A, absorption tank A and absorption tank B's bottom is stretched into respectively at the both ends of this pipeline, it connects rectifier unit top, atmospheric pipeline still to be equipped with respectively at absorption tank A's top. The utility model discloses 3, 5 among the two benzoyl chloride chlorine distillation process, come the moisture among the absorbing gas, corrosion prevention rectification plant and vacuum pump through the concentrated sulfuric acid among dense sulphur acid absorption groove A and the B. The utility model discloses rational in infrastructure, with low costs, working effect is good.
Description
Technical field
This utility model relates to one 3,5-dichlorobenzoyl chloride rectification steam isolating device, belongs to field of chemical equipment.
Background technology
3,5-dichlorobenzoyl chlorides are a kind of pesticide intermediates having very much industrial value, are mainly used in synthesizing pentyl xanthate, it is adaptable to small-sized seed legume, Semen arachidis hypogaeae, Semen sojae atricolor, Rhizoma Solani tuber osi, Caulis et Folium Lactucae sativae and the weeds herbicide of some orchard industrial crops.Pentyl xanthate possesses for comparing other herbicides that pedo relict is low, toxic residue is low, and ensure that agricultural product residual is low.The most international and domestic all advocating uses this herbicide, has the biggest market potential.
3,5-dichlorobenzoyl chlorides are initiation material frequently with m-phthaloyl chloride, obtain end product through chlorinated with chlorine, catalytically rearranging, rectification.But, due to 3,5-dichlorobenzoyl chloride rectifying device and vacuum pump use ordinary carbon steel material, distillation process is under vacuum decompression state, 3,5 two-chlorobenzoyl chloride feed liquids are in distillation process and rectification terminates during emptying returns to atmospheric pressure state, easily to absorb the steam in air, produce hydrochloric acid, corrosion rectifying device and vacuum pump.So, 3,5-dichlorobenzoyl chloride rectification necessary employing steam isolating device, prevent from corroding rectifying device and vacuum pump.
This utility model is 3, in 5-dichlorobenzoyl chloride distillation process, absorbs the moisture in gas by the concentrated sulphuric acid in concentrated sulphuric acid absorption cell A and B, prevents from corroding rectifying device and vacuum pump.This utility model is rational in infrastructure, low cost, good working effect.
Utility model content
The purpose of this utility model is to provide a kind of 3,5-dichlorobenzoyl chloride rectification steam isolating device.
For solving above-mentioned technical problem, the technical scheme that this utility model provides is:
A kind of 3,5-dichlorobenzoyl chloride rectification steam isolating device, including the vacuum pump being sequentially connected, vacuum buffer tank, absorption cell B, absorption cell A and rectifier unit, the top of described vacuum buffer tank is provided with three pipelines, connects vacuum pump, air and the top of absorption cell B respectively；Being additionally provided with the pipeline connecting absorption cell A in described absorption cell B, the two ends of this pipeline are respectively protruding into absorption cell A and the bottom of absorption cell B；Connection rectifier unit top, the pipeline of air is further respectively had at the top of absorption cell A；The absorption cell A connection pipeline with air is provided with the first valve switch, the vacuum buffer tank connection pipeline with vacuum pump is provided with the second valve switch, the pipeline that vacuum buffer tank connects air is provided with the 3rd valve switch.
Described absorption cell A stretches in concentrated sulphuric acid storage tank with the end connecting pipeline of air.
Described rectifier unit connects receiving slit, and receiving slit one end is connected to air.
First, in the distillating still of rectifier unit, 3 are added through the 4th valve switch, 5-dichlorobenzoyl chloride crude product.In distillation process, open the first valve switch, the concentrated sulphuric acid of about 1/3 volume is sucked in absorption cell A, when rectification under vacuum, closing the 3rd valve switch, open the second valve switch, concentrated sulphuric acid is from absorption cell A automatic suction absorption cell B, gas is bubbling in absorption cell B, and dried gas enters vacuum pump；At the end of rectification under vacuum, closing the second valve switch on vacuum buffer tank, open the 3rd valve switch on vacuum buffer tank, concentrated sulphuric acid is from absorption cell B automatic suction absorption cell A, and gas is bubbling in absorption cell A, and dried gas enters rectifier unit.
Accompanying drawing explanation
Fig. 1: structural representation of the present utility model.
In figure: 1-the first valve switch, 2-the second valve switch, 3-the 3rd valve switch, 4-the 4th valve switch, 5-vacuum pump, 6-vacuum buffer tank, 7-absorption cell B, 8-absorption cell A, 9-rectifier unit, 10-receiving slit.
Detailed description of the invention
Below in conjunction with specific embodiment, the utility model is described in further detail.
A kind of 3,6-dichlorobenzoyl chloride rectification steam isolating device, including the vacuum pump 5 being sequentially connected, vacuum buffer tank 6, absorption cell B 7, absorption cell A 8 and rectifier unit 9, the top of described vacuum buffer tank 6 is provided with three pipelines, connects vacuum pump 5, air and the top of absorption cell B 7 respectively；Being additionally provided with the pipeline connecting absorption cell A 8 in described absorption cell B 7, the two ends of this pipeline are respectively protruding into absorption cell A 8 and the bottom of absorption cell B 7；Connection rectifier unit 9 top, the pipeline of air is further respectively had at the top of absorption cell A 8；The absorption cell A 8 connection pipeline with air is provided with the first valve switch 1, the vacuum buffer tank 6 connection pipeline with vacuum pump 5 is provided with the second valve switch 2, connects at vacuum buffer tank 6 and on the pipeline of air, be provided with the 3rd valve switch 3.Described absorption cell A 8 stretches in concentrated sulphuric acid storage tank with the end connecting pipeline of air.Described rectifier unit 9 connects receiving slit 10, and receiving slit 10 one end is connected to air.
First, in the distillating still of rectifier unit, 3 are added through the 4th valve switch 4,5-dichlorobenzoyl chloride crude product.3, in 6-dichlorobenzoyl chloride distillation process, opening the first valve switch 1, suck the concentrated sulphuric acid of about 1/3 volume in absorption cell A 8, when rectification under vacuum, close the 3rd valve switch 3, open the second valve switch 2, concentrated sulphuric acid is from absorption cell A
In 8 automatic suction absorption cell B 7, gas is bubbling in absorption cell B 7, and dried gas enters vacuum pump 5；At the end of rectification under vacuum, closing the second valve switch 2 on vacuum buffer tank, open the 3rd valve switch 3 on vacuum buffer tank, concentrated sulphuric acid is from the automatic suction absorption cell A of absorption cell B 7
In 8, gas is bubbling in absorption cell A 8, and dried gas enters rectifier unit 9.
The above; it it is only preferred embodiment of the present utility model; not this utility model is made any pro forma restriction; any those skilled in the art; in the range of without departing from technical solutions of the utility model; according to technical spirit of the present utility model, any simple amendment being made above example, equivalent and improvement etc., within all still falling within the protection domain of technical solutions of the utility model.
Claims (3)
1. one kind 3,5-dichlorobenzoyl chloride rectification steam isolating device, it is characterized in that: include vacuum pump, vacuum buffer tank, absorption cell B, absorption cell A and the rectifier unit being sequentially connected, the top of described vacuum buffer tank is provided with three pipelines, connects vacuum pump, air and the top of absorption cell B respectively；Being additionally provided with the pipeline connecting absorption cell A in described absorption cell B, the two ends of this pipeline are respectively protruding into absorption cell A and the bottom of absorption cell B；Connection rectifier unit top, the pipeline of air is further respectively had at the top of absorption cell A；The absorption cell A connection pipeline with air is provided with the first valve switch, the vacuum buffer tank connection pipeline with vacuum pump is provided with the second valve switch, the pipeline that vacuum buffer tank connects air is provided with the 3rd valve switch.
The most as claimed in claim 13,5-dichlorobenzoyl chloride rectification steam isolating device, it is characterised in that: described absorption cell A stretches in concentrated sulphuric acid storage tank with the end connecting pipeline of air.
The most as claimed in claim 13,5-dichlorobenzoyl chloride rectification steam isolating device, it is characterised in that: described rectifier unit connects receiving slit, and receiving slit one end is connected to air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620272505.8U CN205473482U (en) | 2016-04-05 | 2016-04-05 | Two benzoyl chloride chlorine rectification steam isolating device of 3, 5 - |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620272505.8U CN205473482U (en) | 2016-04-05 | 2016-04-05 | Two benzoyl chloride chlorine rectification steam isolating device of 3, 5 - |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205473482U true CN205473482U (en) | 2016-08-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620272505.8U Expired - Fee Related CN205473482U (en) | 2016-04-05 | 2016-04-05 | Two benzoyl chloride chlorine rectification steam isolating device of 3, 5 - |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205473482U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110963910A (en) * | 2019-12-17 | 2020-04-07 | 南通市天时化工有限公司 | Method for vacuum system in process of preparing acyl chloride by benzal chloride acidolysis method |
-
2016
- 2016-04-05 CN CN201620272505.8U patent/CN205473482U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110963910A (en) * | 2019-12-17 | 2020-04-07 | 南通市天时化工有限公司 | Method for vacuum system in process of preparing acyl chloride by benzal chloride acidolysis method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160817 Termination date: 20190405 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |